Loudspeaker



FIG. 1 is a front view of a loudspeaker embodying my new design;

FIG. 2 is a right-side view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top-plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The ornamental design for a loudspeaker, substantially as shown.